AC3Filter - a DirectShow filter for AC3 decoding to play AVI with AC3 audio tracks and MPEG2 (DVD). If you're listening to AC3 streams (5.1 sounds) through a stereo audio system (not 5.1), and it's just too quiet, you can use the AC3Filter control panel to gain the volume. Main features:

• Full AC3 standard compliance
• S/P DIF passthrough support
• Decode MPEG2 PES streams
• Multichannel output support
• LFE support
• Dynamic Range Compression (DRC) support
• Overflow control and automatic gain control
• Gain levels control
• Bitstream information (channel format, bitrate, sample rate, coupling freq and maximun freq)
• Input/output levels
• Matrix mixer with direct control of mixing matrix
• Stereo to multichannel mixing
• DolbySurround/ProLogic/ProLogicII downmixing
• Delays for each channel
• Equalizer

This is a really handy one, a filetype analyser: gives detailed information about what codecs you need to play a video/audio file, and also gives you the link where you can download those codecs if they are missing on your system. Recognized formats are: AVI, ASF & WMV, Real (.rm, .rmvb), Ogg (.ogg, .ogm), Mpeg-(S)VCD-DVD (.mpg, .vob) and others. Other features: install program, tooltips, drag & drop support, accessible from contextual menu in Explorer, export of all the information, recusive directory analysis, and so on... It is available in several languages, like Chinese, Deutsch, English, Espanol, Francais, Hungarian, Italiano, Nederlands, polski, Portugues, Romanian, Russian.

BSplayer is a great Windows multimedia player that plays back all kinds of media files ( avi / mpg / asf / wmv / wav / mp3...) and specialises in video and divx playback. Main Features:

• Display subtitles - Support custom subtitles position, color, font, transparency,... Supported formats: MicroDVD, Subviewer, SubRip
• Fully skinnable - Any shape, transparent skins...
• Resizable movie window
• Multilingual
• Drag & drop support
• Command line support
• Pan-scan and custom pan-scan option
• Custom aspect ratios
• Playlist support
• Resolution changing
• Frame capture
• AVI files with more than 2 audio streams supported (multilanguage)
• Support for OGM files, including more then 2 audio/video tracks, supports embeded subtitles/chapters
• External audio file supported
• S/PDIF output supported for AC3 files (with Intervideo audio decoder)
• INI files
• Remote control support - WinLIRC
• Bookmarks
• Simple equalizer (DirectX 8 required)
• Playback rate (1/2x, 1x, 2x) and custom
• and lots of other features not listed here, try it out!

Gordian Knot is an integrated package for the entire process of DivX encoding, featuring the following tools:

• A bitrate and resolution calculator for mpeg4 encoding.
• Editor for Nandub Stats Files (and ecf-files).
• AviSynth-frameserver-setup.
• DivX & XviD ripping and encoding GUI.
• Two pass encoding with audio, easy as it's never been before!
• Supports dozens of languages

VCDGear is a tool written to effortlessly extract MPEG streams from CD images, convert VideoCD files to MPEG, correct MPEG errors, create (Super)VideoCDs and more! The first public release was back in late 1997 and ever since then, VCDGear has continued to grow in complexity, offering a multitude of features to make this a very powerful tool for VideoCD enthusiasts. Some of the features you will find in VCDGear are:

• MPEG stream extractions from popular CD images
• On the fly MPEG correction to fix certain types of MPEG errors
• Super VideoCD and VideoCD image creation
• Sample generation
• Multilanguage support
• Graphical interface and command-line versions available
• Cross platform
• Free! (donations are accepted!)

VirtualDub is a video capture/processing utility for 32-bit Windows platforms, which is streamlined for fast linear operations over video. It has batch-processing capabilities for processing large numbers of files and can be extended with third-party video filters. VirtualDub is mainly geared toward processing AVI files, although it can read (not write) MPEG-1 and also handle sets of BMP images.
Features:

• Fractional frame rates
• Adjust frame rate, decimate frames, and 3:2 pulldown removal.
• Optimized disk access
• Create AVI2 (OpenDML) files to break the AVI 2GB barrier and multiple files to break the FAT32 4GB limit.
• Integrated volume meter and histogram for input level monitoring.
• Real-time downsizing, noise reduction, and field swapping.
• Verbose monitoring, including compression levels, CPU usage, and free disk space.
• Access hidden video formats: your capture card may support but not have a setting for, such as 352x480.
• Keyboard and mouse shortcuts for faster operation.
• Clean interface layout: caption, menu bar, info panel, status bar.
• Integrated MPEG-1 and Motion-JPEG decoders.
• Decompress and recompress both audio and video.
• Remove and replace audio tracks without touching the video.
• Extensive video filter set (blur, sharpen, emboss, smooth, 3x3 convolution, flip, resize rotate, brightness/contrast, levels, deinterlace, threshold)
• Bilinear and bicubic resampling -- no blocky resizes or rotates here.
• Remove segments of a video clip and save the rest, without recompressing.
• Preview feature